. Jalbum 8.1 slides/C-63.html Tue, 17 Mar 2009 11:05:58 -0700 Halos, also known as icebows, are also optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of optical halos, but they are mostly caused by ice crystals in cold cirrus clouds located high (5–10 km, or 3–6 miles) in the upper troposphere. Halos, also known as icebows, are also optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of optical halos, but they are mostly caused by ice crystals in cold cirrus clouds located high (5–10 km, or 3–6 miles) in the upper troposphere. slides/C-63.JPG slides/PH-01.html Tue, 17 Mar 2009 11:05:58 -0700 A glory is seen around a helicopter, HI. A glory is an optical phenomenon produced by light backscattered (a combination of diffraction, reflection and refraction) towards its source by a cloud of uniformly-sized water droplets. A glory has multiple colored rings. The angular size is much smaller than a rainbow, about 5° to 20°, depending on the size of the droplets. Since it is seen in the direction opposite the sun, it is most commonly observed while airborne, with the glory surrounding the airplane's shadow on clouds. The phenomenon is also known as an anthelion. A glory is seen around a helicopter, HI. A glory is an optical phenomenon produced by light backscattered (a combination of diffraction, reflection and refraction) towards its source by a cloud of uniformly-sized water droplets. A glory has multiple colored rings. The angular size is much smaller than a rainbow, about 5° to 20°, depending on the size of the droplets. Since it is seen in the direction opposite the sun, it is most commonly observed while airborne, with the glory surrounding the airplane's shadow on clouds. The phenomenon is also known as an anthelion. slides/PH-01.JPG slides/PH-02.html Tue, 17 Mar 2009 11:05:58 -0700 Heat waves (inferior mirage) seen during road construction in Texas. Heat waves (inferior mirage) seen during road construction in Texas. slides/PH-02.JPG slides/PH-06.html Tue, 17 Mar 2009 11:05:58 -0700 Heat mirage or inferior mirage seen on a west Texas highway. Heat mirage or inferior mirage seen on a west Texas highway. slides/PH-06.JPG slides/PH-10.html Tue, 17 Mar 2009 11:05:58 -0700 Halos, also known as icebows, are also optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of optical halos, but they are mostly caused by ice crystals in cold cirrus clouds located high (5–10 km, or 3–6 miles) in the upper troposphere. Halos, also known as icebows, are also optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of optical halos, but they are mostly caused by ice crystals in cold cirrus clouds located high (5–10 km, or 3–6 miles) in the upper troposphere. slides/PH-10.JPG slides/PH-12.html Tue, 17 Mar 2009 11:05:58 -0700 An inferior mirage, or highway mirage seen on a hot Arizona highway. An inferior mirage, or highway mirage seen on a hot Arizona highway. slides/PH-12.JPG slides/PH-15.html Tue, 17 Mar 2009 11:05:58 -0700 Sun dog, Arizona. Sundogs typically appear as a bright and colorful patch in the sky at a position 22 degrees or more to the left and/or right of the sun. They are a halo. Other common associated phenomena, collectively called "ice halos," are the circumzenithal arc, upper tangent arc, parhelic circle, and lower tangent arc. Sun dog, Arizona. Sundogs typically appear as a bright and colorful patch in the sky at a position 22 degrees or more to the left and/or right of the sun. They are a halo. Other common associated phenomena, collectively called "ice halos," are the circumzenithal arc, upper tangent arc, parhelic circle, and lower tangent arc. slides/PH-15.JPG slides/PH-17.html Tue, 17 Mar 2009 11:05:58 -0700 Light Pillar - SE Arizona. A light pillar is a visual phenomenon created by the reflection of light from ice crystals with near horizontal parallel planar surfaces. The light can come from the sun (usually at or low to the horizon) in which case the phenomenon is called a sun pillar or solar pillar. It can also come from the moon or from terrestrial sources such as streetlights. Light Pillar - SE Arizona. A light pillar is a visual phenomenon created by the reflection of light from ice crystals with near horizontal parallel planar surfaces. The light can come from the sun (usually at or low to the horizon) in which case the phenomenon is called a sun pillar or solar pillar. It can also come from the moon or from terrestrial sources such as streetlights. slides/PH-17.JPG